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Putting an electric heater in shop
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JD 9400
Posted 12/6/2022 01:10 (#9967762 - in reply to #9966805)
Subject: RE: Putting an electric heater in shop


Southern Pa.
baler brian - 12/5/2022 15:09

I use a 10 KW electric heater off and on for 20 years and it has 50 amp fuses in it which have never blown. You don't have a motor start because a heater is resistive load so you don't see a large inrush of current when you start the heater up. That being said, I'm not sure how your rates are in Canada but that heater will be costly to run if it runs much here where we pay .13 dollars per kW.


Fuses and Breakers are two entirely different animals. A fuse should pretty much take it's rated load without blowing. A breaker generally won't take more than 80% of it rated load for long periods of time. They eventually heat up enough to trip. A fuse should pretty much last forever at 80% of it's rated load.

A breaker is better for starting something like an electric motor because a breaker can take somewhat more than it's rated load for a bit without tripping. Unless it's already overheated. Put a short duration overload on a fuse, and it is likely to blow it.

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